Rose tells the BBC: "I called the day I read about it in the news, that there was a situation going on with Brian's hearing.

"I knew there was going to be a problem with having dates on sale and dates sold and stuff like that. So if I could help, and if I was able to do it, and they were interested, I'd love to help. And that's how it started.

"I wasn't looking at it like, 'I'm singing for AC/DC.' I was looking at it like, 'If I can, and if they think I'm able to do it."